KR20080037882A - Concrete anti-corrosive - Google Patents

Concrete anti-corrosive Download PDF

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Publication number
KR20080037882A
KR20080037882A KR1020060105125A KR20060105125A KR20080037882A KR 20080037882 A KR20080037882 A KR 20080037882A KR 1020060105125 A KR1020060105125 A KR 1020060105125A KR 20060105125 A KR20060105125 A KR 20060105125A KR 20080037882 A KR20080037882 A KR 20080037882A
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South Korea
Prior art keywords
nickel
concrete
copper
ions
anticorrosive
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KR1020060105125A
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Korean (ko)
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허권
최홍식
이시우
이성태
곽홍신
김성운
Original Assignee
(주)대우건설
주식회사 도우엔지니어즈
한국기술개발 주식회사
충청대학 산학협력단
주식회사 동아기술공사
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Priority to KR1020060105125A priority Critical patent/KR20080037882A/en
Publication of KR20080037882A publication Critical patent/KR20080037882A/en

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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/06—Oxides, Hydroxides
    • C04B22/062—Oxides, Hydroxides of the alkali or alkaline-earth metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0004—Compounds chosen for the nature of their cations
    • C04B2103/0015—Noble metal or copper compounds
    • C04B2103/0016—Cu
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60—Agents for protection against chemical, physical or biological attack
    • C04B2103/61—Corrosion inhibitors
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00086—Mixtures with prolonged pot-life

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

A concrete anticorrosive is provided to prevent corrosion of concrete and extend a life of concrete while removing sulfur ions present in an organic material and neutralizing sulfate ions as a strong base. A concrete anticorrosive is prepared by dissolving 5-20wt% of copper ions and 5-20wt% of nickel ions in water. The concrete anticorrosive further comprises liquid sodium hydroxide or/and potassium hydroxide. The sodium hydroxide or potassium hydroxide is contained in an amount of 10-50wt%. The copper ion is at least one selected from copper nitrate, copper bromide, copper chloride, and copper sulfate. The nickel ion is at least one selected from nickel acetate, nickel bromide, nickel chloride, nickel iodide, nickel nitrate, and nickel sulfate.

Description

콘크리트 방식제{CONCRETE ANTI-CORROSIVE}Concrete anticorrosive {CONCRETE ANTI-CORROSIVE}

본 발명은 콘크리트를 타설 후 유기물과 접촉되어 부식이 진행될 조건이 만들어진 콘크리트에 사용되는 콘크리트 방식제에 관한 것으로서, 더욱 상세하게는 유기물 내에 존재하는 황이온(S2-)을 제거하면서 황산이온(SO4 2-)을 강한 염기로서 중화시킬 수 있도록 구성함으로써, 콘크리트의 부식을 방지하고 콘크리트의 수명을 연장할 수 있는 콘크리트 방식제에 관한 것이다. The present invention relates to a concrete anticorrosive agent used in concrete in which the condition is to be corroded by contact with organic materials after placing concrete, and more specifically, sulfuric acid ions (SO 2 ) while removing sulfur ions (S 2- ) present in the organic materials. The present invention relates to a concrete anticorrosive agent capable of neutralizing 4 2- ) as a strong base, thereby preventing corrosion of the concrete and extending the life of the concrete.

일반적으로 콘크리트로 이루어진 지하구조물이나 하수구조물 또는 정화조 등은 유기물과 접촉되면서 오랜 시간 습기 또는 수분과 접촉되기 때문에 황화수소(H2S) 또는 황산이온(SO4 2-)의 생성에 따라 콘크리트의 부식이 급격히 진행된다. 콘크리트를 구성하는 시멘트는 강한 염기성을 띠고 있으나 황화수소(H2S) 또는 황산이온(SO4 2-)이 생성되어 용해되면 액성이 산성화되는데, 이에 따라 콘크리트의 부식이 급격히 진행된다. 특히 황산이온(SO4 2-)의 경우 콘크리트 내에 존재하는 칼슘이온과 반응하여 석고를 형성하면서 결정이 팽창되어 쉽게 콘크리트의 박리현상을 진행시키게 된다. In general, underground structures, sewage structures, or septic tanks made of concrete are in contact with moisture or moisture for a long time while being in contact with organic materials. Therefore, corrosion of concrete may occur due to the generation of hydrogen sulfide (H 2 S) or sulfate ions (SO 4 2- ). It's going fast. Cement constituting the concrete has a strong basicity, but when the hydrogen sulfide (H 2 S) or sulfate ions (SO 4 2- ) is generated and dissolved, the liquid acid is acidified, and the corrosion of the concrete proceeds rapidly. In particular, in the case of sulfate ions (SO 4 2- ), the crystals expand as the gypsum is formed by reacting with calcium ions present in the concrete, thereby easily proceeding the peeling of the concrete.

종래에는 생콘크리트의 제조시 사용되는 방식제가 황산화 세균의 억제를 위하여 일본 특개평9-60768에 은, 구리, 아연, 니켈 및 코발트의 수산화물, 인산염, 안티몬산 염으로 제올라이트에 담지시켜 내식성 흄관 등을 제조하는 방법이 제시되었고, 일본 특개평11-156839에는 황산화 세균의 생육 억제에 대한 방법이 제시 되었다. 한편 국내의 황산화세균 억제제로서 국내특허출원(10-2002-0047572호)에서는 은(Ag) 화합물 또는 구리(Cu) 화합물 및 이온 함유화합물을 함유하는 항균제를 제시하였다. 한편 국내특허출원 10-2003-0040911에는 규불화염계의 액상 항균제 조성물에 대한 방법이 제시되었고, 10-2004-10101684에는 규불화염계의 액상 항균제 조성물을 함유한 콘크리트 조성물에 대한 특허가 제시된바 있으나, 이들은 콘크리트의 수밀성을 증진시킴으로써 항균성을 높인 것으로 분석된다. 실제로 콘크리트가 방수 콘크리트라고 한다면 방식 기능이 가장 뛰어난 제품이라고 할 수 있다. 왜냐하면 콘크리트의 부식은 물의 침투에 따른 화학 물질들의 유입에 의한 콘크리트 구조물 내에서의 화학 변화에 기인하기 때문이다. Conventionally, anticorrosive agents used in the production of raw concrete are supported by zeolite with hydroxides, phosphates, and antimonic acid salts of silver, copper, zinc, nickel and cobalt in Japanese Patent Application Laid-Open No. 9-60768 to suppress sulfated bacteria. Japanese Unexamined Patent Application, First Publication No. Hei 11-156839 has proposed a method for suppressing the growth of sulfated bacteria. Meanwhile, the domestic patent application (10-2002-0047572) as an inhibitor of sulfated bacteria in Korea proposed an antimicrobial agent containing a silver (Ag) compound or a copper (Cu) compound and an ion-containing compound. Meanwhile, in Korean Patent Application No. 10-2003-0040911, a method for a liquid antimicrobial composition of a fluorinated salt has been proposed, and a patent for a concrete composition containing a liquid fluorinated antimicrobial composition of a fluorinated salt has been presented in 10-2004-10101684. These are analyzed to increase antimicrobial activity by enhancing the watertightness of concrete. In fact, if concrete is waterproof concrete, it can be said to have the best anticorrosive product. This is because corrosion of concrete is caused by chemical change in concrete structure due to the inflow of chemicals due to water penetration.

본 발명은 상기와 같은 종래의 문제점을 해결하기 위해 안출된 것으로, 본 발명의 목적은 유기물 내에 존재하는 황이온(S2-)을 제거하면서 황산이온(SO4 2-)을 강한 염기로서 중화시킬 수 있도록 구성함으로써, 콘크리트의 부식을 방지하고 콘크리트의 수명을 연장할 수 있는 콘크리트 방식제를 제공하는데 있다. The present invention has been made to solve the conventional problems as described above, an object of the present invention is to neutralize sulfate ions (SO 4 2- ) as a strong base while removing the sulfur ions (S 2- ) present in the organic material. The present invention provides a concrete anticorrosive agent that can prevent the corrosion of the concrete and extend the life of the concrete.

상기와 같은 본 발명의 목적을 달성하기 위해서 본 발명은,In order to achieve the object of the present invention as described above, the present invention,

콘크리트 방식제에 있어서, In concrete anticorrosive,

콘크리트 방식제는;Concrete anticorrosive;

구리이온과 니켈이온을 물에 용해시켜 제조된다. It is prepared by dissolving copper ions and nickel ions in water.

바람직하게는 콘크리트 방식제는 액상 수산화나트륨(NaOH) 또는 수산화칼륨(KOH) 중 어느 하나를 더 첨가하여 제조될 수 있다. Preferably, the concrete anticorrosive may be prepared by further adding either sodium hydroxide (NaOH) or potassium hydroxide (KOH).

더욱 바람직하게는, 구리이온은 질산구리(Cu(NO3)2), 브롬화구리(CuBr2), 염화구리(CuCl2·2H2O), 황산구리(CuSO4·5H2O) 중 어느 하나이고, 니켈이온은 초산니켈(Ni(CH3COO)2), 브롬화니켈(NiBr2), 염화니켈(NiCl2), 요오드화니켈(NiI2), 질산니켈(Ni(NO3)2), 황산니켈(CuSO4·6~7H2O) 중 어느 하나이다. More preferably, the copper ion is any one of copper nitrate (Cu (NO 3 ) 2 ), copper bromide (CuBr 2 ), copper chloride (CuCl 2 · 2H 2 O), and copper sulfate (CuSO 4 · 5H 2 O) Nickel ions include nickel acetate (Ni (CH 3 COO) 2 ), nickel bromide (NiBr 2 ), nickel chloride (NiCl 2 ), nickel iodide (NiI 2 ), nickel nitrate (Ni (NO 3 ) 2 ), and nickel sulfate (CuSO 4 -6-7H 2 O).

이상에서 설명한 바와 같이, 본 발명에 따르면, 유기물 내에 존재하는 황이온(S2-)을 제거하면서 황산이온(SO4 2-)을 강한 염기로서 중화시킬 수 있도록 구성함으로써, 콘크리트의 부식을 방지하고 콘크리트의 수명을 연장할 수 있다. As described above, according to the present invention, by removing the sulfur ions (S 2- ) present in the organic material and configured to neutralize the sulfate ions (SO 4 2- ) as a strong base, to prevent corrosion of the concrete It can extend the life of concrete.

이하, 본 발명의 바람직한 실시예에 따른 콘크리트 방식제에 대해 설명한다. Hereinafter, a concrete anticorrosive agent according to a preferred embodiment of the present invention will be described.

콘크리트 구조물과 접촉하는 유기물의 부패로 황화수소(H2S)가 생성되면 생성된 황화수소(H2S)는 물에 용해되는데, 이렇게 황화수소(H2S)의 용해로 얻어지는 황이온을 제거하기 위해서는 용해도가 높은 구리이온 또는 니켈이온을 함유하는 염을 강알칼리성 수용액으로 제조하여 생성된 콘크리트 방식제를 콘크리트 표면에 살포하면, 폐수 내의 황이온(S2-)이나 황산이온(SO4 2-)이 제거되면서 콘크리트 표면 또는 부패되는 용액 내의 번식하는 황산화세균(Thiobacillus균주)의 번식도 억제될 수 있으며 산성으로부터 알칼리성으로 액성이 변하면 콘크리트 부식은 급격히 감소될 수 있는 것이다. When hydrogen sulfide (H 2 S) is produced due to the decay of organic material in contact with the concrete structure, hydrogen sulfide (H 2 S) is dissolved in water. Thus, in order to remove sulfur ions obtained by dissolution of hydrogen sulfide (H 2 S), When salts containing high copper ions or nickel ions are prepared in a strong alkaline solution, the resulting concrete anticorrosive is sprayed onto the concrete surface to remove sulfur ions (S 2- ) or sulfate ions (SO 4 2- ) in the wastewater. The propagation of the propagating bacteria (Thiobacillus strain) in the concrete surface or in the decaying solution can also be suppressed, and the corrosion of concrete can be drastically reduced when the liquidity changes from acidic to alkaline.

바람직하게는 황화수소(H2S)의 용해도는 20℃, 1기압에서 3.85g/(kg물)이며, 1차 산해리상수(Ka)는 9.5×10-8로 순수한 물에 황화수소를 포화시키면 pH 값이 대략 4 정도로 약한 신맛을 느낄 정도의 산성을 띤다. Preferably, the solubility of hydrogen sulfide (H 2 S) is 3.85 g / (kg water) at 20 ° C. and 1 atm, and the primary acid dissociation constant (K a ) is 9.5 × 10 −8 , so that the pH of the hydrogen sulfide in pure water is saturated. The value is about 4, so acidic enough to feel a sour taste.

본 발명에 따른 상기 콘크리트 방식제는, 액상으로 제공되고, 질산구리(Cu(NO3)2), 브롬화구리(CuBr2), 염화구리(CuCl2·2H2O), 황산구리(CuSO4·5H2O) 중 어느 하나의 구리이온과, 초산니켈(Ni(CH3COO)2), 브롬화니켈(NiBr2), 염화니켈(NiCl2), 요오드화니켈(NiI2), 질산니켈(Ni(NO3)2), 황산니켈(CuSO4·6~7H2O)중 어느 하나의 니켈이온이 혼용되어 물에 용해되어 제조된다. 이렇게 제조된 콘크리트 방식제에는 액상의 수산화나트륨(NaOH) 또는 수산화칼륨(KOH) 중 어느 하나가 더 포함될 수 있다. The concrete anticorrosive agent according to the present invention is provided in a liquid phase, copper nitrate (Cu (NO 3 ) 2 ), copper bromide (CuBr 2 ), copper chloride (CuCl 2 · 2H 2 O), copper sulfate (CuSO 4 · 5H 2 O) either one of the copper ions in the, nickel acetate (Ni (CH 3 COO) 2 ), bromide, nickel (NiBr 2), nickel chloride (NiCl 2), iodide, nickel (NiI 2), nickel nitrate (Ni (NO 3 ) 2 ), nickel sulfate (CuSO 4 · 6 ~ 7H 2 O) of any one of the nickel ions are mixed and dissolved in water is prepared. The concrete anticorrosive thus prepared may further include any one of liquid sodium hydroxide (NaOH) or potassium hydroxide (KOH).

여기서 강한 염기성 용액에서 상기 물질들이 수산화물로 침전이 발생할 수 있으나 황이온(S2-)이나 황산이온(SO4 2-)의 생성으로 액성이 변화하면 이들 물질은 서서히 용해되고 이들 물질이 모두 황이온(S2-)과 반응하여 침전이 형성되어 금속이온(Cu2+, Ni2+)이 모두 제거될 때까지 황화수소는 발생하지 않는다. 참고로 황화구리(CuS)의 용해도 곱(Ksp)은 8×10-37이며 황화니켈(NiS)은 황화니켈 중 가장 용해도가 큰 α형이라고 하더라도 4×10-20으로서 용액내의 황이온은 거의 제거될 수 있다고 할 수 있다. 이들 방식제는 물에 용해시켜 사용할 수 있다. Here, the precipitate may occur as a hydroxide in a strong basic solution, but when the liquidity changes due to the formation of sulfur ions (S 2- ) or sulfate ions (SO 4 2- ), these substances are gradually dissolved and all of these substances are sulfur ions. Hydrogen sulfide does not occur until it reacts with (S 2- ) to form a precipitate and remove all metal ions (Cu 2+ , Ni 2+ ). For reference, the solubility product (Ksp) of copper sulfide (CuS) is 8 × 10 -37, and nickel sulfide (NiS) is 4 × 10 -20 , even though the most soluble type of nickel sulfide is α 4 × 10 -20 . It can be said. These anticorrosive agents can be dissolved and used in water.

하기에는 본 발명에 따른 콘크리트 방식제의 바람직한 실시예를 설명한다. Hereinafter, a preferred embodiment of the concrete anticorrosive agent according to the present invention.

실시예 1Example 1

본 발명에 따른 콘크리트 방식제는, 질산구리(Cu(NO3)2) 5~20 중량%, 질산니켈(Ni(NO3)2) 5~20 중량%를 물에 용해시켜 생성된다. 이와 같이 생성된 콘크리트 방식제에 10~50 중량%의 수산화나트륨(NaOH) 용액을 더 첨가할 수 있다. 여기에서, 질산구리 및 질산니켈이 5중량%이하일때에는 방식효과가 저하되기 때문에 안되고, 20중량%이상일때에는 구리 또는 니켈 이온이 과다하여 외부로 방출되면 중금속 피해가 있을 수 있으므로 이들 농도를 제한하였다. 또한, 수산화나타륨은 일반적으로 50중량% 농도로 판매하기 때문이다.The concrete anticorrosive agent according to the present invention is produced by dissolving 5 to 20 wt% of copper nitrate (Cu (NO 3 ) 2 ) and 5 to 20 wt% of nickel nitrate (Ni (NO 3 ) 2 ). 10 to 50% by weight of sodium hydroxide (NaOH) solution may be further added to the concrete anticorrosive thus produced. Herein, when the copper nitrate and nickel nitrate are 5 wt% or less, the anticorrosive effect is not lowered. When the copper nitrate and nickel nitrate are 20 wt% or more, heavy metal damage may occur when copper or nickel ions are released to the outside, thereby limiting these concentrations. This is because sodium hydroxide is generally sold at a concentration of 50% by weight.

실시예 2Example 2

본 발명에 따른 콘크리트 방식제는, 염화구리(CuCl2·2H2O) 5~20 중량%, 질산니켈(Ni(NO3)2) 5~20 중량%, 50 중량%의 수산화나트륨(NaOH) 용액을 물에 용해시켜 생성된다. 여기에서 염화구리 및 질산니켈이 5중량%이하일때에는 방식효과가 저하되기 때문에 안되고, 20중량%이상일때에는 구리 또는 니켈 이온이 과다하여 외부로 방출되면 중금속 피해가 있을 수 있으므로 이들 농도를 제한하였다. 또한, 수산화나트륨은 일반적으로 50중량% 농도로 판매하기 때문이다.Concrete anticorrosive agent according to the present invention, 5 to 20% by weight of copper chloride (CuCl 2 · 2H 2 O), 5 to 20% by weight of nickel nitrate (Ni (NO 3 ) 2 ), 50% by weight of sodium hydroxide (NaOH) It is produced by dissolving the solution in water. When the copper chloride and nickel nitrate is less than 5% by weight, the anticorrosive effect is not lowered. When the copper chloride and nickel nitrate are less than 20% by weight, the concentration of copper chloride and nickel nitrate is limited since heavy metal damage may occur when copper or nickel ions are released to the outside. This is because sodium hydroxide is generally sold at a concentration of 50% by weight.

이와 같이 생성된 콘크리트 방식제를 냄새가 많은 폐수에 살포하면, 지하구조물이나 하수구조물 또는 정화조 등에서 발생하는 냄새, 즉 달걀이 썩는 듯한 냄새를 제거할 수 있으면서 콘크리트의 부식 더 이상 진행되지 않게 한다. Spraying the produced concrete anticorrosive to the odorous wastewater, it is possible to remove the odor generated from the underground structure, sewage structure or septic tank, that is, the smell of rotting eggs, so that the corrosion of the concrete no longer proceeds.

전술한 바와 같이, 본 발명에 따른 콘크리트 방식제는 지하에 매설된 지하구조물, 하수관련 구조물이나 정화조 구조물의 세균에 의해 형성되는 황산의 폐해로부터 구조물을 매우 효과적으로 보호할 수 있어 구조물의 내구성을 향상시킬 수 있으며 내구연한을 대략 150~200% 정도 연장할 수 있다.As described above, the concrete anticorrosive agent according to the present invention can effectively protect the structure from the damage of sulfuric acid formed by the underground structure buried underground, sewage-related structures or septic tank structure bacteria to improve the durability of the structure It can extend its durability by approximately 150 ~ 200%.

상기에서는 본 발명의 바람직한 실시예를 참조하여 설명하였지만, 해당기술 분야의 숙련된 당업자는 특허청구범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the invention described in the claims. You will understand.

Claims (5)

콘크리트 방식제에 있어서, In concrete anticorrosive, 상기 콘크리트 방식제는;The concrete anticorrosive; 5~20중량%의 구리이온과 5~20 중량%의 니켈이온을 물에 용해시켜 제조되는 것을 특징으로 하는 콘크리트 방식제.Concrete anticorrosive, characterized in that prepared by dissolving 5 to 20% by weight of copper ions and 5 to 20% by weight of nickel ions in water. 제 1 항에 있어서, 상기 콘크리트 방식제는 액상 수산화나트륨(NaOH) 또는 수산화칼륨(KOH) 중 하나 이상을 더 첨가하여 제조되는 것을 특징으로 하는 콘크리트 방식제. The concrete anticorrosive of claim 1, wherein the concrete anticorrosive is prepared by further adding at least one of liquid sodium hydroxide (NaOH) or potassium hydroxide (KOH). 제 2 항에 있어서, 상기 수산화나트륨(NaOH) 또는 수산화칼륨(KOH)은 10~50 중량% 인 것을 특징으로 하는 콘크리트 방식제.The method of claim 2, wherein the sodium hydroxide (NaOH) or potassium hydroxide (KOH) is a concrete anticorrosive, characterized in that 10 to 50% by weight. 제 1 항에 있어서, 상기 구리이온은 질산구리(Cu(NO3)2), 브롬화구리(CuBr2), 염화구리(CuCl2·2H2O), 황산구리(CuSO4·5H2O) 중 하나 이상인 것을 특징으로 하는 콘크리트 방식제.The method of claim 1, wherein the copper ion is copper nitrate (Cu (NO 3 ) 2 ), copper bromide (CuBr 2 ), copper chloride (CuCl 2 · 2H 2 O), copper sulfate (CuSO 4 · 5H 2 O) The concrete anticorrosive agent characterized by the above. 제 1 항에 있어서, 상기 니켈이온은 초산니켈(Ni(CH3COO)2), 브롬화니켈(NiBr2), 염화니켈(NiCl2), 요오드화니켈(NiI2), 질산니켈(Ni(NO3)2), 황산니켈(CuSO4·6~7H2O) 중 하나 이상인 것을 특징으로 하는 콘크리트 방식제.The method of claim 1, wherein the nickel ion is nickel acetate (Ni (CH 3 COO) 2 ), nickel bromide (NiBr 2 ), nickel chloride (NiCl 2 ), nickel iodide (NiI 2 ), nickel nitrate (Ni (NO 3) ) 2 ), concrete anticorrosive, characterized in that at least one of nickel sulfate (CuSO 4 · 6-7H 2 O).
KR1020060105125A 2006-10-27 2006-10-27 Concrete anti-corrosive KR20080037882A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190076904A (en) * 2017-12-22 2019-07-02 버슘머트리얼즈 유에스, 엘엘씨 Photoresist stripper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190076904A (en) * 2017-12-22 2019-07-02 버슘머트리얼즈 유에스, 엘엘씨 Photoresist stripper

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